Chicago 2016 Olympics

An artist's rendering shows the proposed Olympic rowing site along the Lake Michigan waterfront. (Chicago 2016)

An artist's rendering shows the proposed Olympic Village along the Lake Michigan waterfront. (Chicago 2016)

A $1.1 billion proposed Olympic Village would be built on the lakefront near downtown Chicago and an upgraded 31st Street harbor and Marina. (Chicago 2016)

An artist's rendering shows the entrance to the proposed Olympic Stadium in Chicago. (Chicago 2016)

An artist's rendering shows the entrance to the proposed Olympic Stadium in Chicago. (Chicago 2016)

An artist's rendering shows the design for an 80,000-seat, $366 million collapsible stadium in Washington Park in Chicago. (Chicago 2016)

Sept. 30: Oprah Winfrey walks along a street in downtown Copenhagen. Winfrey has joined the Chicago 2016 bid team who are competing with Tokyo, Madrid and Rio de Janeiro for the right to host the 2016 Summer Olympic Games. (AP)

Sept. 18: Boats are tied up in Monroe Harbor along Chicago's Lake Michigan shoreline. During the 2016 Olympic Games, Monroe Harbor would be the site for marathon swimmers, canoeing, kayaking and rowing competitions.  (AP)

The Chicago 2016 Olympics Candidate City logo is shown.  (AP)

McCormick Place is seen against the Chicago sky line. For the 2016 Games, the area would be transformed into "Lake Michigan Sports Complex," featuring 11 Olympic and eight Paralympic sport competitions, as well as the International Broadcast Center and Media Press Center. (AP)

Sept. 21: A tour boat passes under an 2016 Olympics banner spanning the Michigan Ave. bridge in Chicago, one of four cities being considered for the 2016 Games.  (AP)

April 5: The Chicago 2016 Olympic logo is seen at center field as members of the International Olympic Committee tour Chicago's Soldier Field. Completely renovated in 2004, Soldier Field would host soccer competitions during the 2016 Games.  (AP)

An artist's rendering shows the proposed Olympic Island along the Lake Michigan waterfront.  (AP)

Sept. 21: Traffic on the Chicago River is reflected against the Chicago 2016 Olympic logo in the city's downtown area. Chicago's plan for the 2016 games puts the majority of the competition in venues in the city's parks and along its lakefront.  (AP)